/*4.18 折叠
  name:      hui-fold
  sample:
    <ul class="hui-fold">
      <li class="hui-fold-item">
        <h4 class="hui-fold-header">标题<b>+</b></h4>
        <div class="hui-fold-content">内容</div>
      </li>
      ……
    </ul>
*/

.hui-fold {
  .hui-fold-item {
    position: relative;
    .hui-fold-header {
      margin: 0;
      font-weight: bold;
      position: relative;
      border-top: 1px solid #fff;
      font-size: 15px;
      line-height: 22px;
      padding: 7px 10px;
      background-color: #eee;
      cursor: pointer;
      padding-right: 30px;
      b {
        position: absolute;
        display: block;
        cursor: pointer;
        right: 10px;
        top: 7px;
        width: 16px;
        height: 16px;
        text-align: center;
        color: #666;
      }
    }
    .hui-fold-content {
      display: none;
      padding: 10px;
    }
  }
}